As a straightforward comparison Aguero has 257 league goals, 347 in total across three leagues.
Shearer has 283 league goals, 379 in total in one league
so just 26 league and 32 total for Sergio to pass Shearer's records - but the world list is a long way ahead.

I think the extended North Stand should be called the “93:20 Stand” since that’s the end that goal was scored at (why they chose that name for the corporate section at the other end of the ground is bizarre, that should be changed)